Толковый словарь английского языка Oxford English Reference - hardy

adj. (hardier, hardiest) 1 robust; capable of enduring difficult conditions. 2 (of a plant) able to grow in the open air all the year. Phrases and idioms hardy annual 1 an annual plant that may be sown in the open. 2 joc. a subject that comes up at regular intervals. Derivatives hardily adv. hardiness n. Etymology: ME f. OF hardi past part. of hardir become bold, f. Gmc, rel. to HARD